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A study published this month in Nature Food by Stanford researchers including David Lobell examines how U.S. maize yields respond to drought. It finds that current yield-gain strategies work best in ideal weather and are increasingly sensitive to worsening drought.
Yield sensitivity to water storage in the Corn Belt has risen 55% since 1999.
Rising drought sensitivity raises the cost of maintaining yields under climate stress, a long-run supply risk for corn and the feed grains built on it. It is a research finding rather than a near-term supply shock, so the direct price effect is limited.
nasaharvest.orgWritten By NASA Harvest2020年11月26日在过去 1,465 次看涨的天气事件之后，玉米 在 5 个交易日内中位数变动 +0.2%（54% 上涨；中间一半区间为 -1.4% 至 +1.9%），20 个交易日内为 +0.9%。
各商品基准价相对事件前最后收盘价的变动。历史数据汇总同类过往事件；仅描述已发生的情况，不代表未来走势。不构成投资建议。
